\begin{table}
\centering
\begin{tabular}[t]{lcccccccc}
\toprule
  & NLA & NLB & DEA & DEB & UKA & UKB & USA & USB\\
\midrule
(Intercept) & \num{1.898}*** & \num{1.939}*** & \num{1.682}*** & \num{2.020}*** & \num{1.701}*** & \num{1.912}*** & \num{1.801}*** & \num{1.581}***\\
 & (\num{0.033}) & (\num{0.036}) & (\num{0.029}) & (\num{0.034}) & (\num{0.027}) & (\num{0.029}) & (\num{0.033}) & (\num{0.034})\\
treatfac1 & \num{0.534}*** & \num{0.761}*** & \num{0.687}*** & \num{0.656}*** & \num{0.606}*** & \num{0.610}*** & \num{0.619}*** & \num{0.552}***\\
 & (\num{0.048}) & (\num{0.050}) & (\num{0.043}) & (\num{0.046}) & (\num{0.038}) & (\num{0.041}) & (\num{0.047}) & (\num{0.048})\\
\midrule
Num.Obs. & \num{1126} & \num{1137} & \num{1253} & \num{1253} & \num{1585} & \num{1583} & \num{1572} & \num{1571}\\
R2 & \num{0.100} & \num{0.168} & \num{0.169} & \num{0.139} & \num{0.138} & \num{0.123} & \num{0.101} & \num{0.077}\\
R2 Adj. & \num{0.099} & \num{0.167} & \num{0.168} & \num{0.139} & \num{0.137} & \num{0.122} & \num{0.101} & \num{0.076}\\
AIC & \num{3181.0} & \num{3337.2} & \num{3124.7} & \num{3291.5} & \num{3622.1} & \num{3846.9} & \num{4214.6} & \num{4324.9}\\
BIC & \num{3196.0} & \num{3352.3} & \num{3140.1} & \num{3306.9} & \num{3638.2} & \num{3863.0} & \num{4230.6} & \num{4341.0}\\
F & \num{124.989} & \num{229.000} & \num{253.927} & \num{202.787} & \num{253.220} & \num{221.798} & \num{176.537} & \num{130.680}\\
RMSE & \num{0.81} & \num{0.83} & \num{0.75} & \num{0.80} & \num{0.76} & \num{0.81} & \num{0.92} & \num{0.96}\\
\bottomrule
\multicolumn{9}{l}{\rule{0pt}{1em}+ p $<$ 0.1, * p $<$ 0.05, ** p $<$ 0.01, *** p $<$ 0.001}\\
\end{tabular}
\end{table}
